# Snow Observations — Duplicate Key Report + Category Frequencies

> Snow Observations — Duplicate Key Report + Category Frequencies is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Analyzes up to 200 snow observation records (snow_depth_cm, snowfall_cm) to produce a duplicate key report and category frequency summary in two independent analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-09-057?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/snow-observations-duplicate-key-report-category-frequencies-df2bb6a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_83f84KEZTzY9vo3ZKaXwK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability snow-observations-duplicate-key-report-category-frequencies-df2bb6a1 -d '<json body>'
```

Example prompt: Can you check these snow observation records for duplicate row IDs and also give me the category frequency breakdown by station group? I have about 50 rows with fields like row_id, station_group, date, snow_depth_cm, and snowfall_cm.

## When to prefer this

Choose this endpoint when you have up to 200 snow observation records and need both a duplicate key check and category frequency analysis in a single low-cost call ($0.01 USDC). Ideal for data quality pre-checks on weather datasets before archival, reporting, or downstream analysis. Not suitable for live weather lookups, forecasting, or datasets exceeding 200 rows.

## Known failure modes

- Exceeding 200 rows returns an error or truncated result
- Missing required fields (row_id, station_group, date, snow_depth_cm, snowfall_cm) causes validation failure
- Invalid date format (not YYYY-MM-DD) causes schema rejection
- Empty rows array returns an error
- Null values in snow_depth_cm or snowfall_cm are accepted but may affect frequency counts

## How this service works

Snow observations — Duplicate key report + Category frequencies: Duplicate key report + Category frequencies for supplied snow observations records (snow_depth_cm, snowfall_cm). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Two independent analytical reports: (1) a duplicate key report identifying repeated row_id, station_group, and/or date combinations across up to 200 submitted snow observation records; (2) category frequency counts showing how often each distinct value appears in categorical fields such as station_group and date. No live data lookup or external data is involved.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "station_group",
     "date",
     "snow_depth_cm",
     "snowfall_cm"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "snowfall_cm": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "snow_depth_cm": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "station_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "snowfall_cm": 1,
     "snow_depth_cm": 10,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "snowfall_cm": 2,
     "snow_depth_cm": 20,
     "station_group": "group-b"
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "snowfall_cm": 3,
     "snow_depth_cm": 15,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "snowfall_cm": 4,
     "snow_depth_cm": 30,
     "station_group": "group-b"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/snow-observations-duplicate-key-report-category-frequencies-df2bb6a1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)